I need to export all messages on my Exchange 2010 server that are to or from a certain domain. Anything sent to or received from abcdomain.com for example. In years past Exmerge was the ticket for this but everything is PowerShell now. Can someone help me figure out how to accomplish this with powershell? I understand this will only find messages still existing and nothing that has been deleted which is fine. I just need to find anything we have sitting on the server to or from this address.